Heel-building machine abtd method



.Seph. 27.1921.

1,643,498 w. HUBBARD HEEL BUILDING MACHINE AND METHOD Filed Aug. 14. 1920 4 Sheets-Sheet 1 @"9 $1 l 3 N y/aiu ATTORNEYS.

Sept. 27, 1927. w ,498

W. HUBBARD HEEL BULLDING MACHINE AND METHOD Filed Aug. 14,1920 4 Sheets-Sheet 2 r-r Tjllffl NVENTOR.

- a- ATTORNEYS. I

Filed Aug. 14. 1920 w. HUBBARD HEEL BUILDING menus AND METHOD 4 Sheets-Sheet 5 4 ATTORNEYS.

W. HUBBARD HEEL BUILDING MACHINE AND METHOD Sept. 27,1927.- 1,643,498

Filed Aug, 14, 1920 4 Sheets-Sheet 4 IN V EN TOR.

a ATTORNEYS.

Patented Sept. 27, 1927. I I

UNITED STATES PATENT OFFICE.

WILLIAM HUBBARIQ, 0F HERKIMER, NEW YORK, ASSIGNOR TO UNITED SHOE MA- CHINEBY CORPORATION, OF PATERSON, NET/V JERSEY, A CORPORATION OF NEW JERSEY.

HEEL-BUILDING MACHINE AND METHOD.

Application filed August 14, 1920. Serial No. 403,536.

This invention relates to building heels comprising a plurality of superposed lifts of predetermined characteristics. The invention is herein set forth by way of illustration with special reference to the building of so-called pasted or wet heels, although in various aspects the invention is not so limited.

. It has been customary in practice to build such heels manually, the heel lifts usually being sorted and placed in bins or lift holders in accordance with the size, form, quality or other characteristics of the lifts. Commonly a single heel form or mold conforming to the desired shape and size of the heel to be builtis located on a table in front of the heel lift holders and a paste tank provided with suitable paste-applying means, such as a paste pad or brush, is disposed near the heel form. The operator successively removes the lifts, one at a time, from the holders, applies paste to such lifts as are to be coated and deposits or assembles the lifts successively in predetermined positions in the heel form until the heel of the desired height is built.

In order to speed up these naturally slow manual operations, operators frequently use both hands at once, one hand reaching for and removing the lifts singly from the lift holders while the other hand is' used for paste applying and for positioning the lifts in the heel form as they are taken from the lift holders. Although heels may be built more rapidly by this procedure, the operators attention is necessarily divided between the lift holders, the pasting apparatus and the heel form. None of the operations receives full and undivided attention and the resulting confusion and consequent nervous,

mental and physical fatigue incident to such an inherently inefficient procedure inevitably result in carelessness, inaccuracy and inferior quality of the product. Moreover,

the relativelocation and arrangement of the lift holders, the pasting apparatus and the heel form is such that there are many useless and wasteful motions required in transferring the lifts from the holders to the.

pasting apparatus and thence to the heel form, particularly when lifts are taken from the more remote holders, makingit neces- Sary toshift the lifts from one hand to the other before they are pasted or assembled. Even under the most favorable conditions, therefore, and if performed in the best manner possible, the method heretofore practiced is ineflicient and wasteful of time and monly employed, although various wellknown forms of heel-presses are also utilized. lVhatever the character or type of press used, however, the prior art presses have uniformly subjected heels to light pressures only, these pressures being as low even as 20 pounds and not exceeding, so far as known, 100 or at most 125 pounds, with the result that pressure periods of not less than 20 minutes to one half an hour and many times extending to 10 or 12 hours have been retgiired for the setting of the paste.

ne ofthe objects of the present inven tion is so to provide for building heels by hand that heels of uniformly high quality may be built much more rapidly, economically and efliciently and: with a minimum amount of effort and skill upon the part of the operator. 7

In the preferred exemplification of the present invention herein described by way of illustration, to obviate the above mentioned and other disadvantages of prior procedures, heels are built in multiple by performing at each of several stations, in turn,

operations upon a plurality of heels sublii result from such use of an alkaline ingredient in the substantial quantity indicated. It increases the fluidity and penetrating properties of the paste so that it is absorbed into the lifts rapidly and dries or sets quickly; it stabilizes the paste and produces a permanent and homogeneous emulsion which retains the adhesive portions in suspension so that the paste is especially effective; it acts upon and modifies the surface glaze of leatherboard lifts and thus permits of a more ready penetration of the paste into the pores; and also it so generally improves the properties of the paste and peculiarly adapts it for advantageous and expeditious use in the heelbuilding art, particularly when employed in connection with the heavy range of pressures contemplated by the present invention, that great economies result in the amount of paste em-- ployed. Furthermore, while the superiority of such a paste-is very marked, whatever treatment is employed to set the paste and obtain adhesion between the lifts, this kind of paste is peculiarly etlicient when heavy pressures such as contemplated by the present. invention are employed. As demon strated in many instances, the adhcsiveness of the paste has even exceeded the strength of the heel lift material, so that the body portions of the lifts would tear before there would be any separation of the lifts.

These and other objects and features of the invention will be readily understood from the following description, read in connection with the which: t

Figure l is a view in front eleva "ion of a duplex machine constructed in accordance with the present invention; Fig. 2 is a-view in sideelevation, looking from right to left in Fig. 1; Fig. is a detailed view of one of the heel form supports, showing particularly an auxiliary means that may be employed for draining ofi any excess of paste that may accumulate in the heel form; Fig. 4 is a view, partially in plan and partially in section on the section line 4L%t of Fig. 2, showing particularly the driving mechanism of the machine; Fig. 5 is a view accompanying drawings, in

.in side elevation, looking from left to right in l*-'ig. 1. of the lower portion of the machine and showing particularly the automatic control mechanism for the main clutch, a portion of the apparatus being broken away for the sake of clearness; Fig. 6 is a detailed plan view of. a portion or the frame; Fig. 7 is an enlarged sectional plan view taken on the section line 7-7 of Fig. 8' Fi 8 is an enlar ed view in front 7 1., 3 2'. 3

elevation ofone of the heel form supports and the mechanism for effecting its actuation; Fig. 9 is a view, partially in sine elevation and partially in section on the line 9-9 of Fig. 8, and showing the support in its raised pressure-applying position; Fig. 1.0 isa view, partially in side elevation and partially in section on the line 1O -10 of Fig. 8, showing the support in its raised heel assembling or building position; Figll is an enlarged view in front elevation of one set of heel forms in cooperative pressiiig relation to the stationary pressuremeans; Fig. 12 is a plan view of the apparatus shown in Fig. 11; Fig. 13 is a sectional view on the section line 13-l3 of Fig. 11; and Fig. ll is a plan view of one of the heel forms mounted upon the upper end of one of the heel form supports.

Referring to the drawings, the preferred wliiie being subjected to pressure; ng means 28 by means of which the are coated with paste; a plurality of sets of movable duplex heel forms 30 into which the heels are progressively built and in which they are subsequently pressed by being brought into cooperative pressing re lation with the stationary pressure means; a pair of movable heel form supports 32 upon which the heel forms 30 are mounted; a pair of vertically reciprocating carrlages 34; for supporting and reciprocating the supports 32and heel forms 30; an actuating mechanism including cams 36 for alternately actuating the carriages 34, supports 32 and heel forms 30 to and from their respec tive operating positions; a plurality of e ecting devices including plungers 38 for releasing the heels from the heel forms after they have been pressed; a clutch controlling mechanism including a rotatable clutch arm it), a control lever (l2, a foot treadle Maud control cani d6, by means of which the starting and stopping of the machine is governed; and a safety device or lock 48 for preventing the starting of the machine except under the control and at the will of the operator.

The supporting frame of the machine comprises a plurality of lower side pedestals 50 (Figs. 1 and 2) upon which is mounted an upper frame member 52 embodying an upper horizontal plate 54 that, in plan, is

of the general forin of a letter E. as shown in Fig. 6. The upper frame member 52 1s' secured to the side pedestals 50 by means of the outermost of four stationary vertical rods 56, the lower ends of which project through adjacent flanges of the frame member 52 and pedestals 50 and are provided e members 26 against which the heels are through one half of the revolution.

s '52 by'being bolted thereto in the same general manner.

The driving mechanism of the machine iis 'carriedby'the lower pedestal members 50 and comprises power shaft 62 (Figs. 4: and 5 suitably ournaled therein and which is provided at one end with a pulley 6% loosely'm'ounteduponthe shaft and adapted "to be constantly driven by means of a belt (not shown) or other suitable means. A 1' clutch of any well-known form embodying 'tlie'rot'atableclutch arm L0 is employed for connecting and'disconnecting 'the pulley 64: to and from the power shaft 62. The op- }p'o'si'te end of the shaft 62 carri s a pinion "6'6 that meshes with a gear 68 tired to the corresponding end'ol a shaft 70, the ratio o'fthe gearing, in this instance, being four 'to-one,so that for every two revolutions of the power sha'ft 62, the shaft 70 rotates The shaft '70 constitutes the cam shaft of the machine and is provided with a pair of similar actuating cams 36 that are alternately or oppositely arranged, and also With the clutch control cam 46, the function of which will be hereinafter fully disclosed.

The lifts, which maybe of leather, leatherboard Or analogous heel-lift material, from which the heels are to be built are segregatedaccording to their characteristics and contained in the several lift holders 24: of 'the holding means 22 which is conveniently supported upon a plurality of rearwardly eritencling brackts 72 that are'secured to the frame of the machine. The front openings of the several lift holders from which the lifts are removed are constructed and arranged to allow a plurality of lifts to be removed at once and are preferably suffi- 'ciently large to permit the introduction of both hands of the operator at the same time. In order that all of the lift holders shall be located within easy reaching distance of the operator, the lift'holders are arranged in two tiers. the one above the other.

In the illustrated process of building heels, the operator selects, picks up and removes two lifts at a time from the proper It tho'lder 2 -l, preferably, one with each hand. 'It'being desirable to ha'e the bettoni surface of the lowermost lift in a heel free of paste, the first 'two lifts removed from the ii-ft holding means are not pasted but are deposited directly into the duplex heel forms by substantially concurrent and similar movements of the operators hands. Subsequently two other lifts are removed :i n 'the saine'general manner from'the proper lift holder after which the operator applies paste to the lower faces thereof. In the machine illu'strated, tl1is is accomplished by wiping the two lifts substantially conci1r- 'rently'aeross the pasting means 28, one lift being held in each hand. The pasting means 28 is conveniently "located 'below and immediately in front of the lift holding means.

Referring particularly to Figs. 11, 12 and 13, the pasting means 28 comprises asha'llow "tank i l containing a body of paste in which is immersed a paste brush or pad 76. lhispastingmeans 28 is so constructed and "arranged as to enable the operator to conveniently 'app'ly paste to two lifts at a time and preferably extends throughout a substantial length of the lift holder case 22,in order that "the lifts when taken from even t g more remote lift holders may be'brought contact therewith directly and quickly and with a minimum of unnecessary moveupon the lifts and to distribute the paste 'Zontal surface 84' of the plate by subn wer serves to spreadout and evenly distribute the paste over the faces of the lifts.

As already stated, the paste is preferably formed from ail-aqueous solution of a commonly employed commercial heel-building gum of a starch base which is rendered al ltaline by the addition of a sufficient quantity of bicarbonate of soda, or the like to produce a distinctly alkaline reaction.

Having properly coated the pair of lifts with paste inthe manner described, onelift being always retained in andinanipulated by each hand, the operator next deposits the pasted lifts substantially concurrently with the respective hands upon the previjously assembled dry lifts in the pair of heel forms chine.

30 comprising one set, or unit of the 'm'a- 4' This set of heel forms 30 "occupies a forward position, as shown in Figs. 1 and 2, in which the forms are readily accessible to permit the operator to assemble or deposit the pasted heel lifts therein. Other pairs of lifts are subsequently removed from the lift holding means, pasted and assembled progressively into the duplex heel forms in a similar manner until the heels are built up to the required height.

There are two sets of heel forms 30, and inasmuch as they are of like construction, it is only necessary to describe a single heel form. Each heel form, as shown particularly in Fig. 14, comprises a base portion 88 having a plurality of upwardly extending fingers 90 that are so located and shaped'as to conform to the ultimate shape of the heel to be assembled or built therein. The heel forms 30 of each set are detachably mounted by means, of screws 92 to the upper end of one of the heel form supports 32, a member 94 of suitable material to which the paste will not readily adhere being interposed between the base portion 88 of the heel form and the upper surface of the support 32. In the event of an accumulation of paste upon the heel forms30 during the heel building operations, the excess is carried away through the agency of draining devices which comprise troughs 91 (Fig.3) secured to the upper ends of therespective supports These troughs 91 respectively deliver the excess paste into the upper ends of a pair of tubular conductors 93 suitably mounted upon the respective supports 32 and extending downwardly into proximity to a receptacle 95 mounted at the lower portion of the machine.

After two heels are completed in the set of duplex heel forms 30 occupying its lift-receiving or assembling position, these heels immediately are transferred together to a pressure-applying station where they are subjected to heavy pressure simultaneously during the concurrent assembly of'two other heels in the other set OfllBQl forms. For this purpose, the'two sets ofheel forms 30 are mounted upon the heel form supports 32 by which they are actuated alternately from a forward heel building or lift-receiving po-- sition to a rearward pressureapplying position in which they are held in cooperatlve pressing relation to the pressure means and, more specifically, to. their corresponding fixed pressure members 26. The supports 32 are similar in construction and each is pivotallymounted at its lower end upon a stud 96 (Figs. 8 and 10) that is carried by forwardly and downwardly projecting extensions 98 forming parts of the carriage 34, which is provided at the front with a cen tral open recess to permit of the reception of the lower portion of the support 32. Each carriage 34 further embodies a plurality of recessed lugs 100 that are adapted to slide upon two of the stationary vertical rods'56, which extend upwardly through the upper plate 54 of the frame member 52 and upon which one of the yokes 78 carrying the upper pressuremembers 26 is adj ustably mounted. The upper ends of each pair of vertical rods 56 are threaded and loosely project through openings n the respective ends of the yoke 78 which 1s supported in position by means of fingers 102 secured thereto and projecting this purpose, the pressure members 26 are loosely mounted upon a rod 108 and are maintained in position by means of a plurality of set screws 110 that project downwardly through the yoke member 78 and into engagement with oppositely extending flanges 112 constituting integral parts of the pressure members 26. The set screws 110, not only serve to definitely position the pressure members 26 against sidewise movement, but also may be adjusted so as to cause the lower pressing surfaces of the pressure members to assumethe proper inclination to ac commodate heels of any desired inclination or wedge form. 'Moreover. the set screws 110 are also utilized to take the upward thrust during the pressing operation. there by relieving the supporting rod 108 from undue stress.

The back and forth adjustment of the pressure members 26 is accomplished by mounting the respectiveends of the rod 108 in a plurality of slides 114 that are slidably mounted within suit-able grooves in the lower face of the yoke member 78, and set screws 116 are employed to definitely position the slides 114 after they have been adjusted to their proper positions.

As already mentioned, there are two sets of heel forms 30 and pressure members 26, as well as two heel form supports 32, thus constituting a machine of multiple or twin construction, one unit being adapted tov re.- ceive the component lifts of two heels during the heel building operation. while the other unit occupies a pressure-applying position to maintain pressure upon the previously built heels while the paste is setting, and while two other heels are being built in the first unit. Each unit is duplex in a:- rangement, being provided with two heel forms in which two heels are built substantially concurrently.

Ion

Moreover, the oon struotion, and igelatiyle arrangement of the setsjof. heel forms, the,

pasting mfi llls and the lift. lioldingmeans ie such. that liftsv ing yj be removed from the holding means, pasted, and assembled, into he. eel. fo m by bs a tial y Qh uQu m'oyen ents of thelittsjin the seine, general,

h me han sms. t ctu ing h ererhl; mt iih lhh pe at pos tlhh e hoth r.

and for subjecting the. healer. to, pressure. in,- clude the cams. 8.6 upon. the. earn. shaft 70, anchinesrnuoh as these operating meoha 'nisrns arefsi niler in construction. and. difierj only. n. he r ang r p s -t tans. or im r elation',

hhi'one qz i e'Q atng m chahieihs. Wi l be described.

Bla ch c t-11436 isprgyided withtwoopPO- sitely disposed high portions, 11,6 endv is.

d p d hqp rht veli engegt 1 thetfis carried by; the stud 96 mounted upon the inoveble carriage 347, As theegtueti'ng Gene 36 is ro t ated from either otthe posi tions shown in Eigs 'tl end 1Q, the carriege- 34 is reeiprocated. Vertically, being moved,"

downwardly, and. then upwardly once for, each half revolution of, the, cam, thereby.

loweringend thenraisingthefsupport 32 and Setof'heel, formsjlt) mounted. thereon, In

. order tobringr,the set ofheel fprnis. 30 from its raised lift-receiyingpositron, as v indig.

hated. nlt e 0, nt prt p re-h p y he Be cured gto thej.side of the cam 36. Ae the 'cern.

36 l' te tt l h h .l l h-nhe. first lowered rQ-mth ir: i fl'e eiy' hgs p s n rr y 1 11 he, p r te f efing rej ht h e m l ck 2 shrh eht htei e gageinent with the arm,129, wherpnpon the;

upp nd h l: erms, ar ng. ck r 'lly mt h tme z l 'lh: he. p eesh ean Q hat HP hthh unwfldmci hmwt. h ar i e 3t thtt by he whi 61. h ee erm I re h th. p sin el i n W h pp Press-hmmemb 26 and-the heels C,O1l ttl 1'l ,(-3 Cl tl1el'iIl alfe thusfillb jeetedto pressure substantially. cormrirreirtlj.

Thiepressure is heayy, andpreferz bly, with},

in the range of pressures. heneinbeforeindr.

cated, the desirable pressure-being dependent upon the, nature of-the paste, the dampe f. h app ica i n 1. t x. pe tihe; 5

As'the support and heeltorrns, ere thus swung, into pressing elineinent, with the pre sure. h j h hck hei Pla c re qr he l pp x hrhue' t m n with at portio nl126 of a, stop 128 that is adj list-ably fix ed to oneof the ver tioal rods 56.

Before "the. can; block 122. d iseng qges the aetugtting. $111,120, the get 111,36 beoomee operat'iyetoralse the cerriagefi l,and support 32 sufiiciently to cause the. lockingjplete 12% toe pr jes ed up ar y mue o c in the s tpp member; 128, thereby maintaining,the..lieel forms. 30 in Ventieel alinernent h he-nres hrehhlh ifi; th duringthe remainder of the upward movement, rhet hh tqhhh y u n h i e PQfilQP. f he, ret ag ing. d wn a d. movemen hit er pres hr h -s en pp edhe n he sph vehQ lQ Q ms sov re e t e ter: on tant he y. n 'e h e r a period suifioient to permit the paste to set,

whigh depends upon various, conditions, xhhhg rh qh; re h hem-9 h f. he P s eo li heame lht Qt. nr hsure mp -t h me. e u ed he fi htin f e e ry. Pres u e heels he; es bed. m c

h n/ 11?: Q Ql'pthfitflhfimin.d Q Q Q mgxedi he b e e nd to e; u e an ial y the; time. required to build; in multiple, by using; the twohends of the operator in the hhhhee hshr hed, t Ph f eh i th el t; centemp etee hat h 'm s h he Shall he be sed; n he m hu hh f W. heels, sue h menfs heels, which require rretif s.:ehth lerhfhre ess m t s eme; A1 1 x r m example. t W: el n e. heh theturebfwhi h h s; ma h e has een] use ueh isiu ly; i; fe h r i slipper heels. In this use, a nui nberiot heels re bu lt qeheurrehtly, ne. op. t hhe e; n, a h. 0 Qt: p Q h li formsz hat; s, 9? nee; e hhy l st o z he he l twee -re. e dap d l n; ehtr z heel an t oift. e lr o he bu lt. aeimehyg te her w-o heels ay e. bui t: 11.; he ofa hq h r; in ac of? he. p rii mme h u r n ly y h n hQ'aQP 'Q-FQF- 0 2' .e thrh ttir ly, the me umber; i: heele hey, e. buil n ur n y wo. pair-. 1 Ev ox-ms; ri gm a u e p ri9 fihe i hp rte t hihe s. at P essu e, Per -99 1 nd; t e; umb r of ee s built: during that; period are. so proportioned hat hile..- he hits.- f eh ht el ing m sed; a ike ih f i ts. l, e built, nto; he lsi a p i? Q?- p ura y pen s of} heels, being built. during each heavy-pressure. period, aecord-ing to. the. heightof theheels, and irnrnerliatelyput up}. derheeyy i pressurewitlrthe result. that the. buildingen d pres sing arecarried on alternetiyely by, the use of the duplex machine.

QH h TDQ QiQX he r-tin d s ri duh quh t. cig he app ication of p s re efh' e en Q; HPPQrtBZ. nd. ehri ge re p rmi ted; by. he em 36 t e o ered out of pressing relation, although maintained temporarily in vertical alinement with the pressure members 26 by the cooperative action of the locking plate 124 and notched stop member 128. During this lowering movement, the pressed heels in the 7 heel forms are released and partially ejected by means of the ejecting plungers 38.

Referring particularly to Figs. 11 and 13, each heel form 30 is provided with an ejecting plunger 38 that is fixed to a yoke 134 and pro ects loosely through a suitable opening in the upper end of the support 32. The ejector yoke 134 is suaported in position by means of a pair 0 adjustable rods 136, the upper ends vof which are threaded into the support 32 and the lower ends of which project loosely through openings in the yoke 134 and are provided with suitable heads upon which the yoke rests. These rods 136 are surrounded by a pair of coiled springs 138 that normally serve to hold the yoke 134 and ejector plungers 38 in their lowermost inoperative positions. In order to cause the ejector plungers to function to release the heels during the retracting downward movement of the heel forms, the yoke member 134 is provided with a central recess 140 in which is pivotally mounted a pawl 142 that is normally maintained in the position shown in Fig. 13, by means of a spring 144. As the support 32 and heel forms 30 are retracted from pressure-applying position, the pawl 142 is brought into engagement with a projecting stop member 146 that is secured to the upper frame member 52, thereby arresting the downward movement of the ejector plungers and cans ing them to be projected upwardly relative to said heel forms and into releasing engagement with the pressed heels therein.

Immediately subsequent to the releasing operation, the locking plate 124 is lowered out of engagement with the notched stop member 128, and a plunger 150 actuated by a coiled spring 152 operates upon a portion of the support 32 to force it and the heel forms forwardly out of alinement with the upper pressure means. A rigid stop is provided for the purpose of limiting the forward movement of the support 32, and this stop comprises a plate 154 that is secured to the support and which is brought into engagement with the stop member 128. However. in order to avoid any undue shock to the apparatus, a cam block 156 is secured to the actuating cam 36 and functions to enthe actuating arm 120 during the forward movement of the support and heel forms to control and retard this movement.

After the heel forms have been swung forwardly and have also reached their lowermost positions, the continued rotation of the actuating cam 36 serves to raise the c-rriage 34 and therefore the support 32 with reference to the high portions 116 of the cam 36 so that said block cooperates with the actuating arm 120 only once durmg each complete revolution of the cam. Thus, just prior to one upward movement of the carriage and heel forms 30, effected by one high portion of the cam 36, the cam block 122 will swing the heel forms backwardly into the vertical plane of the pressure means,

whereas on the next elevation of the carriage and heel forms, effected by the other high portion of the cam 36, the cam block 122 will not cooperate with the arm and, as'a consequence, the heel forms 30 occupying their forward positions will be elevated into a position to permit heels to be assembled or built therein.

While it is not necessary that the heel forms occupy a raised position during the building operation, it is found desirable for the reason that the subsequent lowering movement thereof, preparatory to being swung inwardly and raised to pressureapplying position, serves to withdraw the heel forms from the operators fingers and thus prevents the fingers from being carried inwardly and injured during the pressing operation.

As already stated, the machine is of twin construction, being provided with two units of heel forms, pressure members, jacks and carriages, which units are similar in construction and operation, except that the respective units are operated in opposition or alternation, the one unit occupying its pressure-applying position while the other unit occupies a position in which the heel forms are presented for the convenient assembly of heels. This alternate operation of the respective units is accomplished merely by locating the res oective actuating cams 36 and cam blocks 122'and 156 180 degrees apart, upon the cam shaft 70. i

The machine is power driven. as already described. but is under the control of the operator through the agency of a clutch of any well-known construction, \Vlllt'll therefore need not be described, and which embodies as a component element thereof, the rotating clutch arm 40 which is constructed and arranged so that when it is free to rotate with the constantly driven pulley 64, it establishes an operative connection between said pulley and the power shaft 62, and when held against rotation, it effects the/disconnection of the clutch and thereforearrests the operation of the machine.

The machine is of the single cycle type, being thrown into operation under the conlUii llU

trol-ot; the operator and being automatically.

brought to rest by the disconnection of. the

ofgthedmits or sets of heel, l ormsisin pressure-applying position and the other set is in heelbuilding or lilt-receivmg position.

In. the illustrated machine, this result is.

seeuredTby meansot'the two-armed V-shaped control, lever 42 which is mounted upon a rock shaft 160 to which is attached the trea dle 4 4 A spring 162 normally tends to hold thetneadleinits upward position and one; of the arms. of the vi-shaped control leyer 42 in pesition to be engaged by the-rotating clutch arm 40, while the otherarm thereof is adapted tocooperate with the contrpl oamflti on the cam shaftz 70. By reason of. this; arrangement, when two heels have been built. in the eXposec set of heelv forms, the operator merely. has to depress the treadle 4A thereby releasing the clutch arm 40andpermitting; the clutch to be thrown into, action to start-themachine into operation. As the control cam 46 rotates,it maintains the cam-engaging arn'i of the ii-shaped control lever- 4 2 0ut; of the path of movement of the rotating clutch arm Ountil the cam shaft and control cam 46 have rotated through 180 degrees, whereupon the-spring 162returnsthe control lever 42 int-oposition tobe engaged by the rotating clutch arm 40. Thereupon, the clutch is disconnected and the machinebrought to rest with one oi' the units or sets. ofheel forms in pressure-applyingdposition and the other, in lift-receiving orheel building position.

For, the purpose of preventing the accidental operation of the treadle l l, the lock or detent 48 is provided, andit, normally occupies thev position shownin l lig. 5..in.wh ich it serves as a stop to prevent the depression of the treadle and. consequent starting of the machine until it hasbeen manually released. This locking detent :8is locatedioirthe side of'the machine an d is adapted for vertical sliding movements, the upper end thereof being pivotally attached to theinner end of a control lever on handle 164 that is rotatably mounted uponapin 166'carried by a bracket. 168 that is securedto the l rameotthe machine. A torsion spring 170 surrounds the pin 166 and operates insuch manner as to normally hold the operating handleltijl in its raised position andrthe locking detent l8 in itsv lowered operative position. then the machine is to be-startedinto operation, the operator merely. has to depress. the control handle 16% to release the locking-detent 48. after which the treadle lat may be de- Pli S Sed; and the machine connected to the source of power by the clutch. As soon as the machine startsinto operation, the camengaging. arm of the irshaped; control lever {12 serves to retain theloolzing detent; 48 in; its upper inoperative position until a. halfrevolution-.01 the cam shaft and. control cam ll} has taken place. when the machine is auto,

mat-ically brought to restin the mannerde; scribed and the locking dctent is releasedtail, it will be understood that the invention- 18 not so. restricted and that many of the advantages and benefits thereof may be derived lrom methods and. machines differing consitierabiv l'rom those specifically described without departinefrom the spirtand Therefore only such;

scope of the-invention,

limitations should be. imposed; as are indi cated; in the appended claims.

Having thusdescribed the preferredmeth ed. and. embodiment of the invention, that which is cla medas new isz -1. method of. heel: manufacture-which comprises building heels .lnmultipleby subs stantially concurrent; and similar operations of the two hands of an operator.

A method of heel manufacture which comprises lmilding heels inmultiple substantially concurrently by substantially completing at each of several stations in turn operat ons performed by the two hands of an operator upon a plurality oheels,whereby. the attention and eflort of the operator are directed to the operation being; performed at earh station before being transferred to thesucceeding station.

3, A method of heel manufacture which comprises building pasted heels in multiple by substantiallyv concurrent and similar oprations olthe two hands of a n.operator, the lifts-olieach heelwhich are to be pasted hay ing paste applied thereto while still held in the hands of the operator.

4: A- method; of heel manufacture which comprises building heels, in multiple sub,- stantially concurrently and then subjecting said heels to pressure substantially concur.- rently while other heels are being built.

5. A method of heel manufacture which comprises. building heels in multiple substantially concurrently, transferring the heels together to apressure station. and subjecting them to pressure substantially con-v currently while ther heels are being built.

6. A method of heel? manufacture which comprises building heels in multiple substantially concurrently by successive operations including picking up a plurality. of lifts, applying paste thereto, and assembling the liftts into heel forms, all bysubstantially continuous movements of the lifts in the same general direction.

7; A. method of heel manufacture which comprises building. heels in multiple in a an operator and including selecting and picking up two lifts, and depositing the lifts (all till

into a plurality of heel-forms.

9. A method of heel manufacture comprising building heelsin multiple by successive operations, each performed substantially concurrently by the two hands of an operator upon a plurality of heels and including picking up two lifts, one in each hand, and depositing said lifts, one by each hand, into a pair of adjacent heel-forms.

1.0 A method of heel manufacture which comprises building heels in multiple by suc cessive manual operations, each performed substantially concurrently on two heels by an operator and including selecting vand picking up two lifts, applying paste thereto, and then depositing the lifts into a pair of heel-forms.

11. A method of heel manufacture which comprises selecting and picking up two lifts substantially concurrently, depositing them substantially concurrently into a plurality of heel-forms, similarly selecting and picking up other pairs of lifts, applying paste thereto, and assembling them two at a time into the heel-forms.

12. A method of heel manufacture compriszaing building heels in multiple by successive operations, each performed substantially concurrently by the two hands of an operator upon a plurality of heels. includingpicking up two lifts, one by each hand, applying paste to all. but the first two lifts, and then depositing the pasted lifts, one by each hand, into a pair of heel-forms.

13. A method of heel manufacture comprising building heels in multiple by successive operations, each performed substantially concurrently by the two hands of an operator upon a plurality of heels and including picking up two lifts, one by each hand. applying paste thereto while still retained in the hands, and subsequently depositing the pasted lifts, one by each hand, into a pair of adjacent heel-forms.

let A method of heel manufacture which comprise building pasted heels in multiple by in sive operations, each performed substantially concurrently upon a plurality of heels and including the manual operations of picking up a plurality of lifts, applying paste thereto, and assembling the lifts into heels, and thereafter subjecting the heels to pressure, while other heels are built in a similar manner.

l5. it method of heel manufacture com-= prising building heels in multiple by suecessive operations, each performed substan tially concurrently by the two hands of an operator upon a plurality of heels and including picking up two lifts, one with each hand, applying paste thereto and spreading the paste thereon, all while retained in the respective hands, and then depositing the lifts, one with each hand, in separate piles to form heels. 7 i

16. A method of heel manufacture which comprises building heels in multiple by successive manual operations, each performed substantially concurrently on two heels by an operator and including picking up two lifts, applying paste to one face of each lift, spreading the paste by pressure against a flat surface and then depositing the pasted lifts into a pair of heel forms.

17. A method of heel manufacture which comprises picking up successive pairs of lifts, applying paste concurrently to one face of each lift of a pair, removing the paste from the pasted lifts by a Wiping movement of the lifts over a surface and then assembling the lifts into a pair of heels.

l8. A methou of heel manufacture which comprises passing successive pairs of heel lifts over a pastenpplying member, concurrently distributing the paste and removing any excess thereof by pressure upon a flat surface, andassembling the lifts into a pair of heels; I

19. A duplex heel building machine having, in combination, pressure means, a pair of heel forms normally disposed in front of said pressure means and into which heels are built substantially concurrently, means for effecting relative horizontal movement of said heel forms and said pressure means until they are in vertical alinement, and means for subjecting the heels to pressure substantially concurrently.

20. A duplex heel building machine hav-; ing, in combination, pressure means, a pair of heel forms normally disposed in front of said pressure means and into which heels are built substantially concurrently, and means for effecting relative horizontal movement of said heel forms and said pressure means until they are in vertical alinement. and for effecting relative approaching movement thereof to subject the heels to pressure substantially concurrently,

21. A duplex heel building machine having, in combination, stationary upper pressure means, a pair of' movable heel forms normally disposed in front of said pressure loo l to

-movements between said heel forms and said pressure means to first aline the forms and pressure means and then to subject the built-- up heels to pressure substantially concurrently.

23. A duplex heel building machine having, in combination, li'ft holding means constructed and arranged for ready removal of a plurality of lifts substantially concurrently, two heel forms in which two heels may be built at the same time, pressure means for subjecting to pressure substantially concurrently the heels built in said forms, and means for moving the heel forms from a heel lift receiving and assembling position out of cooperative relation with the pressure means to a position in cooperative relation with the pressure means.

24. A duplex heel building machine having, in combination, lift holding means constructed and arranged for the ready removal of two lifts substantially concurrently, two heel formsinto which two heels are completely built substantially concurrently, and pasting means disposed between the lift holding means and the heel forms and constructed and arranged for the application of paste to two lifts substantially concurrently.

'25. A duplex heel building machine having, in combination, two heel forms, lift holding means and pasting means constructed and arranged relative to said heel forms to permit substantially continuous move ments in the same general direction by the two hands of the operator from the lift holding means to the heel forms for applying paste to and assembling pairs of lifts, one by each hand, into the respective heel forms, pressure means. and means for effecting relative movements of the heel forms and pressure means for subjecting the builtup heels to pressure substantially concurrently.

26. A duplex heel building machine having, in combination, a plurality of lift holders each having a sufliciently large front opening to permit the introduction of both hands of the operator and the removal of two lifts at the same time, pasting means for applying paste to the lifts removed from said lift holders, and two heel forms into which the pasted lifts are deposited sub stantially concurrently.

27 A duplex heel building machine having, in combination, a plurality of lift holders each having a sufliciently large front opening to permit the introduction of both hands of the operator and the removal of two lifts at the same time, pasting means constructed and arranged to permit the operator to apply paste substantially concurrently to two lifts, and two heel forms into which the pasted lifts are deposited substantially concurrently.

28. A vduplex heel'buildin machine having, in combination, lift holding means constructed and arranged for ready removal of two lifts substantially concurrently, means disposed below and in front of the lift holding means and constructed and arranged to permit the operator to apply paste substantially concurrently to two lifts, and two heel forms disposed below and in front of said pasting means into which the pasted lifts are deposited substantially concurrently.

A duplex heel building machine having, in combination, two supports, each carrying two heel forms into which two heels are built substantially concurrently, pressure means, and means for moving one sup port to transfer two heels into pressing relation with said pressure means and hold them under presigure while the other support is moved into heel lift assembling position.

. A duplex heel building machine havin combination, two supports, each carrying two heel forms, lift holding and pasting means common to all the heel forms and constructed and arranged to facilitate the filling of the heel forms in pairs with pasted lifts, pressure means, and means for moving one support to carry the heels in one pair of 'heel forms into pressing relation with said pressure means and hold them under pressure, while the other support is actuated to carry the other pair of heel forms into position to be fill-ed.

S1. A heel building machine having, in combination, stationary pressure means, two movable heel forms into which heels are built and severally adapted to cooperate with said pressure means, said 'heel forms being movable back and forth from the vertical plane of said pressure means, and means for controlling and actuating said movable heel forms to cause them to move into co0pera tive pressing relation with said pressure means alternately.

32. A duplex heel building machine having, in combination a pair of sets of heel forms, each comprising two heel forms in which two heels may be built at the same tive movements between the heel forms of each set and pressure means to cause each set of heel forms to be alternately in heel lift receiving and assembling relation and in pressure applying relation.

33. A duplex heel building machine having, in combination, a pairof sets of heel forms, each comprising two heel forms in which two heels may be built at the same time, pressure means, and means for relatively moving the heel forms of the two sets to cause said pressure means to apply pres sure to the heels built in one set of heel forms While the other set of heel forms is in position for the reception and assembling of heel lifts therein.

34. A duplex heel building machine having, in combination, lift holding means having a sufficiently large front opening to permit the introduction of both hands of the operator and the removal of two lifts at the same time and a pair of sets of heel forms, each comprising two heel forms in which two heels may be built at the same time, and means for concurrently movin both sets of heel forms to such positions that the heels built in one setcan be subjected to pressure while the other heel forms can have heels built in them.

35. A duplex heel building machine hav-= ing, in combination, lift holding means constructed and arranged for ready removal of a plurality of lifts substantially concurrent ly, a pair of sets of heel forms, each comprising two heel forms in which two heels may be built at the same time, pressure means, and means constructed and arranged to actuate said sets of heel form's so that the heel forms of one set are out of cooperative relation with the pressure means and in heel lift receiving and assembling relation while the heel forms of the other set are in cooperative relation with the pressure means.

36. In a heel building machine, the combination of means for pressing together the lifts of a freshly pasted heel, a form into which lifts may be assembled manually, and a support upon which said form is mounted, said support being constructed and arranged to swing in a vertical plane about a pivot beneath the form from a position in front of the pressing means to a position in which a heel in the form is in co-operative relation to the pressing means.

37. A heel building machine having, in combInation, meansfor applying paste to the component lifts of a heel, stationary pressure means, and a movable heel form, in which a pasted heel is built, adapted to be actuated from a lift-receiving position out of alinement with said pressure means to a position in cooperative pressing relation therewith and toward said pressure means, whereby the pasted heel built in said heel form is subjected to pressure. j

38. A heel building machine having, in combination, stationary upper pressure means, a movable heel form normally occupying a forward position to permit a heel to be built therein, and means for actuating said heel form into vertical alinement with said upper pressure means and then raising said heel form into cooperative pressing reiation therewith to subject the heel to pres sure.

39. A heel building machine having, in combination, stationary upper pressure means, a vertically reciprocable heel form in which heels are built and pressed, nor rnally occupying a position out of vertical alinement with the upper pressure means to permit a heel to be built therein, and means for effecting the vertical alinement of said heel form and pressure means on each alte .nsite upward movement of said heel form and for maintaining the heel form and pressure means out of alinement on the other alternate upward movements thereof.

10. A heel building machine having, in combination, stationary upper pressure means, a movable heel form normally occupying a forward raised position to permit a heel to be built therein, and actuating means for lowering said heel form, moving it into vertical alinement with said upper pressure means and then raising said heel form into pressing relation therewith to sub ject the heel to pressure.

41. A heel building machine having, in

combination, stationary pressure means, a

vertically movable carriage, and a heel form,- in which heels are built and pressed, mounted upon said carriage for forward movement from the vertical plane of said pressure means when said pressure means and said heel form" are out of cooperative pressing relation.

i2. A heel building machine, having, in combination, stationary pressure means, a vertically movable carriage, a movable heel form, in which heels are built and pressed, mountzt-d upon said carriage for forward movement from the vertical plane of the pressure means to permit a heel to be built therein, and means for moving the heel form into vertical alinement with the pres sure means to cause the heel form and pressure means to subject the heel to pressure when the carriage is moved upwardly.

43. A heel building machine having, in combination, lift holding means, stationary upper pressure means disposed below and in front of said lift holding means, pasting means carried by said pressure means and disposed between it and the lift holding means, a movable heel form normally occupying a position below and in front of said pressure means to permit the building of heels ltllQI'Ql-H, and means for actuating said heel form into cooperative pressing relation with said pressure means to subject the heel to pressure.

.44. A heel building machine having, in combination, a movable heel form into which lifts are assembled to form a heel, a stationary pressure means, means for moving said heel form from a lift assembling position out of alinement with said pres ure means to a position in cooperative relation with said pressure means, means for moving .the form toward said pressure means. and resilient means for moving said heel form out of cooperative relation with said pressure mean t5. A heel building machine having, in combination, a movable heel form into which lifts are assembled to form a heel, a stationary pressure means, means for moving aid heel form from a lift assembling position out of alinement with said pressure means to a position in cooperative relation with said vpressure means, resilient means for moving said heel form out of cooperative relation with said pressure means, and means forcontrolling and retarding the movement of the heel form out of cooperative rela tion with said pressure means.

lG. A heel building machine having, in combination, stationary upper pressure means, a vmovable heel form normally occupying a forward position to receive the component lifts of a heel, means for actuating said heel form into cooperative pressing relation with said pressure means, means for moving the heel form toward said pres sure means, to subject the heel to pressure, means for restoring the heel form to its initial normal position, and means actuated during the restoring movement for releasing the pressed heel in theheel :form.

47. A heel building machine having, in combination, stationary upper pressure means, a movable heel form, in which heels are built and pressed, normally occupying a ,position out of the vertical plane of the pressure means to permit a heel to be built therein, means for moving said heel form into vertical alinement with the pressure means and into cooperative pressing relation thereto to cause the heel to be subjected to pressure, resilient means for returning the heel form to its normal position, and guid-o ingmeansfor maintaining the heel form in vertical alinement with the pressure means against the action of said resilient means whilethe heel form is beingmoved into and out of pressing relation with said pressure means.

58. A heel building machine having, in combination, lift holding means, pasting means, a plurality of stationary guide rods, a stationary upper pressure member mounteaaaes ed on said rods ,-,a vertically reciprocable carriage guided by said rods, and a heel form, into which heels are built, pivotally mounted upon said carriage for back and forth movements into and out of the vertical plane of said pressure member.

1-9. A heel building machine having, in combination, pressure means, pasting means comprising a paste tank and a plate or shelf having its rear portion inclined downwardly toward said tank and its forward portion extending substantially horizontally, a heel form positioned in front of said pressure means to permit heels to be built ,therein, and means for moving .said pressure means and said heel form relatively into cooperative pressing relation to subject the heel to pressure.

50. A- heel building machine having, in combination, a paste tank, a paste pad im mersed in said tank across which the lifts are wiped by the operator, a plate or .shelf having its rear portion inclined downwardly toward the tank and its forward portion extending substantially horizontally, said plate vor shelf serving to remove the excess of paste and distribute ,the remaining paste on ,said lifts as theyare wiped over it, and a heel form into which the pasted lifts are deposited.

51. A heel building machine having, in combination, pressure means, a heel form normallyout of vertical alinement with said pressure means and in which heels are built, means for effecting relative movements of said pressure means and said heel form to aline them-and then subject the heel to pres sure and to cause the heel form to lie out of alinement with said vpressure means and in position for the ready assembling of a heel therein, power mechanism for driving the machine. and means for interrupting the drivingmechanism automatically to stop the machine when the pressure means and heel form are out of alinement.

52. A heel building machine having, in combination, stationary upper pressure n'ieans, a vertically reciprocable heel form mounted to move back and forth from the vertical plane of the pressure means, means for actuating said movable heel form towards and from the vertical plane of said pressure means, mechanism including a clutch for normally driving the machine, and automatic means for disconnecting the clutch to stop the machine when the movable heel form is out of vertical aiinement,

with said pressure means.

.53. Amethod of heel manufacture which comprises building a heel with an adhesive interposed between the component lifts thereof and subjecting the heel immediately to a heavy pressure in the neighborhood of 1600 lbs. for a fractional .part of a minute.

54-. A method of manufacture of pasted Ill) heels including leatherboard lifts which comprises chemically modifying the surface glaze of the lifts by treatment with an alka li, applying an adhesive substance to the lifts, assembling the lifts into a heel, and immediately thereafter subjecting the heel to a very heavy pressure.

55. A method of manufacture of pasted heels including leatherboard lifts which comprises simultaneously treating the lifts with an adhesive and with an alkali in sufficientquantity to modify the surface glaze of the lifts and permit rapid penetration of the adhesive, then romptly assembling the lifts into a heel an immediately subjecting the heel to a very heavy pressure.

56. The method of making pasted and pressed heels, which consists in coating lifts of a pair of heels with a quick-setting alkaline paste and assembling the heels substantially concurrently on holders, subjecting the pair of heels to heavy pressure while the heels of another pair are being assembled, and then removing the first pair from said holders and building another pair on the same holders while the heels of the second pair are being pressed.

57. The method of making pasted and pressed heels, which consists in coating lifts for a plurality of heels with a quick-setting alkaline paste, assembling heels in pairs, and subjecting the heels so assembled simultaneously to heavy pressure, the duration of the pressure period and the number of heels built during a given pressure period being so proportioned that while the lifts of one batch of heels are being pressed, the same number of lifts will be assembled into heels.

WILLIAM HUBBARD. 

